Extrusion mold

Abstract

The utility model relates to the field of outdoor plastic wood manufacturing, in particular to an extrusion mold which comprises a mold frame and a mold core, the mold core is detachably connected with the mold frame, a fixing structure is arranged on the mold core and used for fixing the mold core, and the fixing structure comprises a fixing groove, a bolt, a screw hole, a movable groove, a guide groove, a spring, a connecting rod, a guide rod, a positioning pin, a positioning hole a and a positioning hole b. The extrusion mold is provided with the fixing structure, and the mold core and the mold frame can be quickly mounted and dismounted, so that only the mold core needs to be replaced when the mold core is abraded, the whole mold does not need to be replaced, only the mold core needs to be made of special materials when the extrusion mold is manufactured, materials of the mold frame are saved, and the production cost is reduced. The use cost is greatly reduced, the practicability is improved, meanwhile, when the mold core is cleaned, the mold core can be detached and cleaned, the situation that the whole mold is taken up for cleaning is avoided, and the cleaning convenience is greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of outdoor plastic wood production, in particular to an extrusion mold. Background Art

[0002] Extrusion die is a kind of forming die, but its discharge method is achieved through extrusion. It is widely used in aluminum special-shaped structures and also used in plastic parts. It is used at the front end of the extruder to make pipes or special-shaped materials.

[0003] At present, the existing extrusion mold core and mold frame are not removable. Therefore, when the mold core is worn or damaged after long-term use, the entire mold needs to be replaced, which greatly reduces the use cost and practicality of the extrusion mold. After the work is completed, the mold core is often cleaned. Since the existing extrusion mold is not removable, the entire mold needs to be picked up for cleaning, which is very bulky and greatly reduces the convenience of cleaning. Summary of the invention

[0004] The main purpose of the utility model is to solve the problem that the above-mentioned existing extrusion molds do not have a disassembly function. Therefore, when the mold core is worn after long-term use, it is not possible to replace only the mold core, but the entire mold needs to be replaced, and the entire mold needs to be picked up for cleaning, which is very bulky. Therefore, the convenience of use is reduced while the practicality is also reduced, and the use cost of the extrusion mold is increased. An extrusion mold is provided.

[0005] The specific scheme of the utility model is: an extrusion mold, including a mold frame and a mold core, the mold core is detachably connected to the mold frame, a fixing structure is provided on the mold core, the fixing structure is used to fix the mold core, the fixing structure includes a fixing groove, a bolt, a screw hole, a movable groove, a guide groove, a spring, a connecting rod, a guide rod, a positioning pin, a positioning hole a and a positioning hole b, the fixing structure is provided with at least two groups and is arranged on both sides of the mold core, the fixing groove is arranged at the top of the inner part of the mold core, a bolt is threadedly connected to the fixing groove, the bottom of the bolt passes through the screw hole, a movable groove is provided below the screw hole, and guide holes are provided on both sides of the movable groove. A guide groove is provided inside the guide groove, a guide rod is fixed therein, a spring and a connecting rod are mounted on the guide rod, the spring is located on the left side of the connecting rod, the connecting rod is slidably connected to the guide rod, a locating pin is fixed at one end of the two connecting rods away from the guide rod, the locating hole a is provided on the surface of the mold core, the end of the locating pin away from the locating hole a is arranged in an arc surface, the arc surface of the locating hole a is located directly below the bottom of the bolt, the middle part of the mold frame is hollowed out, the hollow shape of the middle part of the mold frame matches the mold core, a locating hole b is provided on the inner side wall of the mold frame, the locating hole a, the locating hole b and the locating pin are coaxial and matched.

[0006] According to the above technical solution, the mold core and the mold frame are fixed by a fixing structure and at the same time, a detachable effect is achieved, so that the mold core can be replaced separately when the mold core is worn after long-term use.

[0007] Furthermore, a mounting hole is provided on the arc surface end of the positioning pin, a ball is rotatably connected inside the mounting hole, and the ball is embedded inside the mounting hole.

[0008] According to the above technical solution, the friction of the arc surface is reduced by the rotation of the ball inside the mounting hole, making it easier for the positioning pin to move when the bolt is lowered.

[0009] Furthermore, the fixing structures are provided with four groups, and the fixing structures are arranged at the four corners of the mold core and in a rectangular arrangement.

[0010] According to the above technical solution, the stability of the mold core fixation is improved by using four sets of fixing structures, and at the same time, the four corners of the mold core are set to further improve the stability of its fixation with the mold frame.

[0011] Furthermore, the bottom end of the bolt is semicircular in shape.

[0012] According to the above technical solution, the semicircular shape is set to reduce the friction between the bolt and the arc surface end of the positioning pin, thereby improving the smoothness of pushing the positioning pin to move.

[0013] Furthermore, the mold core, positioning pin, guide rod, spring and connecting rod are all made of high-strength steel.

[0014] According to the above technical solution, the durability of the mold core is improved by using high-strength steel material, while the strength and firmness of the fixed structure are improved.

[0015] Compared with the prior art, the utility model has the following advantages: the extrusion mold is installed with a fixed structure, and the mold core and the mold frame can be quickly installed and disassembled. Therefore, when the mold core is worn, only the mold core needs to be replaced, and there is no need to replace the entire mold. When making the extrusion mold, only the mold core needs to be made of special materials, which saves the material of the mold frame, greatly reduces the cost of use and improves practicality. At the same time, when cleaning the mold core, the mold core can be disassembled and cleaned, avoiding the need to pick up the entire mold for cleaning, which greatly improves the convenience of cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the mold core and mold frame split;

[0018] Figure 3 yes Figure 2 The structural cross-sectional view at AA;

[0019] Figure 4 It is a top sectional view of the mold core structure;

[0020] Figure 5 yes Figure 3 A magnified view of the B structure;

[0021] Figure 6 yes Figure 4 A magnified view of the structure at C;

[0022] Figure 7 is a schematic diagram of a positioning pin structure;

[0023] In the figure: 1. mold frame; 2. mold core; 3. fixing groove; 4. bolt; 5. screw hole; 6. movable groove; 7. guide groove; 8. spring; 9. connecting rod; 10. guide rod; 11. positioning pin; 12. positioning hole a; 13. positioning hole b; 14. mounting hole; 15. ball bearing. DETAILED DESCRIPTION

[0024] See also Figure 1-7, This embodiment is an extrusion mold, which is composed of a mold frame 1 and a mold core 2. The mold frame 1 is used to install the mold core 2, and the mold core 2 is a precision part used for the key operation of the center part of the mold to form the internal structure of the product. The mold core 2 is disassembled and connected with the mold frame 1 through a fixed structure, which is convenient for replacing the mold core. The fixed structure is composed of a fixed groove 3, a bolt 4, a screw hole 5, a movable groove 6, a guide groove 7, a spring 8, a connecting rod 9, a guide rod 10, a positioning pin 11, a positioning hole a12 and a positioning hole b13 structure. The fixed structure is provided with at least two groups and must be arranged on opposite sides, so as to ensure its fixed firmness and stability. The fixed groove 3 is arranged at the inner top of the mold core 2, and the bolt 4 is threadedly connected to the inner thread of the fixed groove 3. The bolt 4 is threadedly connected to the screw hole 5, so as to achieve the effect of rotating in the fixed groove 3. The bottom thread of the bolt 4 passes through the screw hole 5, and there is a movable groove 6 below the screw hole 5. The movable groove 6, the screw hole 5 and the fixed groove 3 are connected. The bolt 4 can rotate in the screw hole 5, thereby passing into the movable groove 6. Two guide grooves 7 are hollowed out on both sides of the movable groove 6, and a guide rod 10 is horizontally installed in the guide groove 7. A spring 8 and a connecting rod 9 are mounted on the guide rod 10, and the spring 8 is located on the left side of the connecting rod 9, that is, it is mounted on the guide rod 10 near the positioning hole a to play the effect of pushing the connecting rod 9 in the opposite direction. The connecting rod 9 can slide on the guide rod 10 through the hollow center thereof. A positioning pin 11 is fixedly connected to the end of the two connecting rods 9 away from the guide rod 10. The connecting rod 9 slides on the guide rod 10 to drive the positioning pin 11. The positioning hole a12 is provided on the surface of the mold core 2 and is located on one side of the positioning pin 11. The end of the positioning pin 11 away from the positioning hole a12 is an arc surface setting. The arc surface of the positioning pin 11 is located directly below the bolt 4, which is convenient for the bolt 4 to squeeze it. The middle of the mold frame 1 is hollowed out, and the hollow shape matches the shape of the mold core 2. A positioning hole b13 is provided on the hollow inner wall of the mold frame 1, and the positioning hole b13, the positioning hole a12, and the positioning pin 11 are on the same axis when installed and match each other.

[0025] Furthermore, a plurality of mounting holes 14 are provided on the arc end of the positioning pin 11, and a ball 15 is rotatably connected in the mounting hole 14. The ball 15 is embedded in the mounting hole 14. The maximum diameter of the ball 15 is larger than the maximum diameter of the mounting hole 14, so that the ball 15 will not fall off, thereby ensuring that it can rotate inside to reduce the friction between the bolt 4 and the positioning pin 11.

[0026] Furthermore, four groups of fixing structures are provided, and the four groups of fixing structures are respectively arranged at the four corners of the mold core 2 in a rectangular arrangement. The four corners are fixed to improve the firmness and stability of the fixation.

[0027] Furthermore, the bottom of the bolt 4 is in a semicircular shape, so that it can be pressed against the arc surface end of the positioning pin 11 when descending to achieve the effect of pushing the positioning pin 11, thereby reducing friction.

[0028] Furthermore, the mold core 2, the positioning pin 11, the guide rod 10, the spring 8 and the connecting rod 9 are all made of high-strength steel, which improves the durability of the mold core 2 and improves the firmness and strength of the fixing structure.

[0029] The working principle of this embodiment is as follows: during installation, the mold core 2 is first placed in the hollowed-out part in the middle of the mold frame 1, and both sides are ensured to be flush and placed on the table. Finally, the bolt 4 is rotated by manpower. At this time, the bolt 4 makes a linear downward movement in the screw hole 5. When the bottom of the bolt 4 contacts the arc surface of the positioning pin 11 below, the bolt 4 is continuously rotated, and the bottom of the bolt 4 contacts the ball 15, thereby driving the ball 15 to rotate in the installation hole 14. Since one end of the positioning pin 11 is an arc surface, when the bolt 4 is squeezed downward, the positioning pin 11 will be squeezed and give way to one side. The positioning pin 11 moves to the positioning hole a12 on the guide rod 10 through the connecting rods 9 at both ends. When the connecting rod 9 moves on the guide rod 10, it pushes the spring 8 to one side to perform an elastic force storage movement. When the bolt 4 is completely dropped, the positioning pin 11 completely moves out of this extrusion distance of the arc surface. The positioning pin 11 first passes through the positioning hole a12 and then is inserted into the positioning The mold core 2 is fixed in the hole b13, and the bolt 4 is limited on one side of the locating pin 11 to prevent the spring 8 from rebounding and causing the locating pin 11 to be retracted, thereby completing the fixation. When the mold core 2 needs to be replaced after long-term use, the bolt 4 is rotated on the contrary. At this time, the bolt 4 moves upward and moves out of the right side of the locating pin 11. At this time, the locating pin 11 loses the obstruction of the bolt 4, and the spring 8 makes elastic movement again, thereby pushing the locating pin 11 back to the locating hole a12, so that it is separated from the locating hole b13, and the disassembly of the mold core 2 and the mold frame 1 can be completed, which greatly improves the practicality of the extrusion mold. When the mold core 2 is damaged after long-term use, the mold core 2 can be replaced alone to avoid replacing the extrusion mold as a whole. In addition, when making the extrusion mold, only high-strength material is needed at the mold core 2, thereby saving the material at the mold frame 1 and reducing the cost of use. In addition, the mold core 2 can be disassembled and cleaned when cleaning, and it will not appear very bulky, thereby improving the convenience of cleaning.

Claims

1. An extrusion mold, comprising a mold frame and a mold core, characterized in that: The mold core is detachably connected to the mold frame, and a fixing structure is provided on the mold core. The fixing structure is used to fix the mold core. The fixing structure includes a fixing groove, a bolt, a screw hole, a movable groove, a guide groove, a spring, a connecting rod, a guide rod, a positioning pin, a positioning hole a and a positioning hole b. The fixing structure is provided with at least two groups and is arranged on both sides of the mold core. The fixing groove is arranged at the top of the mold core. The fixing groove is threadedly connected with a bolt. The bottom of the bolt passes through the screw hole. A movable groove is provided below the screw hole. Guide grooves are provided on both sides of the movable groove. The guide groove is fixed with A guide rod, wherein a spring and a connecting rod are mounted on the guide rod, wherein the spring is located on the left side of the connecting rod, wherein the connecting rod is slidably connected to the guide rod, wherein a locating pin is fixed to one end of the two connecting rods away from the guide rod, wherein the locating hole a is arranged on the surface of the mold core, wherein the end of the locating pin away from the locating hole a is arranged in an arc surface, wherein the arc surface of the locating hole a is located directly below the bottom of the bolt, wherein the middle portion of the mold frame is hollowed out, wherein the hollowed-out shape of the middle portion of the mold frame matches the mold core, wherein a locating hole b is arranged on the inner side wall of the mold frame, wherein the locating hole a, the locating hole b and the locating pin are coaxial and matched.

2. An extrusion die according to claim 1, characterized in that: A mounting hole is arranged on the arc surface end of the positioning pin, a ball is rotatably connected inside the mounting hole, and the ball is embedded inside the mounting hole.

3. An extrusion die according to claim 1 or 2, characterized in that: The fixing structures are provided with four groups, and the fixing structures are arranged at the four corners of the mold core and in a rectangular arrangement.

4. An extrusion die according to claim 1 or 2, characterized in that: The bottom end of the bolt is in a semicircular shape.

5. An extrusion die according to claim 1 or 2, characterized in that: The mold core, positioning pin, guide rod, spring and connecting rod are all made of high-strength steel.

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